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Vicki Glass, vice president of public relations and media at the Kentucky State Fair, said the burgers are being sold by Sivori Catering, located between Freedom Hall and the North Wing.

Unlike the Wisconsin burger, the Kentucky version will have not one, but two Krispy Kreme doughnuts as the bun.

At the Kentucky State Fair, the plain burger is $6.50; with cheese, it's $7; and with bacon, it's $8.

At the Wisconsin fair, which ended Sunday, the $5 burger featured the normal patty and melted cheese. For an extra dollar, patrons could top the burger with last year's big hit: chocolate-covered bacon on a stick (fueling a debate on whether the new dish is dinner or dessert).

The calorie count: 1,000, according to Nathan Morrissey, executive chef at the Machine Shed.

What did Wisconsin State Fair-goers say was the burger's appeal?

"Well, let's see," Dave Owens of Appleton, Wis., said on the fair's opening day. "It's a doughnut with chocolate-covered bacon and a cheeseburger put together. How could you go wrong?"

Owens' nephew, Harrison Smith, 9, also of Appleton, had a bite of his uncle's burger and had to have one for himself.

"It's really good," he said.

Todd Whittaker of Fond du Lac, Wis., came to the state fair with his wife, Dawn, and their 16-month-old daughter, Bren. They were interested in trying the new burger after seeing a similar product on the Travel Channel show Man vs. Food.